Perhaps you should try some spelling variations:
"dung think java snippets" » "dung thang java snippets", "dung tin java snippets", "dung thanh java snippets", "dung trinh java snippets"
"chung cfd code snippets" » "chung cu code snippets", "chung cua code snippets", "chung chi code snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung think java snippets") or ("chung cfd code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung think java snippets") OR ("chung cfd code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung think java snippets ) or ( chung cfd code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung think java snippets") or ("chung cfd code snippets"))) or ("locating bug core snippets"))*.